Source: Schema.org v30.1 vocabulary. Official vatID property definition.
What does vatID mean?
The value-added Tax ID of the organization or person with national prefix (for example IT123456789). Can also be described as [[iso6523Code]] with proper prefix.
Used on types (domainIncludes)
Expected value types (rangeIncludes)
Schema.org domainIncludes and rangeIncludes are descriptive guidance, not strict validation prohibitions. Check the official reference for updates.
Related reference
Browse all Schema.org types and properties · Google feature support status